import java.util.TreeMap;

/**
 * 红黑树实现
 * @author zhu_shuai
 * @since 8/5
 */
public class TreeMapDemo {
    public static void main(String[] args) {
        TreeMap<String, Integer> treeMap = new TreeMap<>();
        treeMap.put("a", 1);
        treeMap.put("b", 2);
    }
}
